Machine for reversely winding webs of fabrics



Sept. 11, 1951 F. LEACH ET AL MACHINE FOR REVERSELY WINDING WEBSOFKFABRICS Filed July 50, 1947 7 Sheets-Sheet l I v t FRANK LEACH and nen org IVOR WILLIAM SUTCLIFFE Sept. 1 1, 1951 Filed July so, 1947 F.LEACH ET AL MACHINE FOR REVERSELY WINDING wms OF FABRICS '7 Sheets-Sheet2 6| N Q Q 9 u. u.

I F E i M (D V m Q 2 l u. f l i i a i Q Inventors FRANK LEACH and IVORWILLIAM SUTCLIFFE AGE/VT 7 Sheets-Sheet 5 Inventors FABRICS F. LEACH ETAL Sept. 11, 1951 MACHINE FOR REVERSED! WINDING WEBS OF Filed July 50,1947 FIG.3.

FRANK LEACH and IVOR WILLIAM SUTCLIFFE Sept. 11, 1951 F. LEACH ET ALMACHINE FOR REVERSELY WINDING WEBS OF FABRICS '7 Sheets-Sheet 4 FiledJuly 50, 1947 ll llllllllll Il Inventors FRANK LEACH and IVOR WILLIAMSUTCLIFFE Sept. 11, 1951 F. LEACH ET AL MACHINE FOR REVERSELY WINDINGWEBS OF FABRICS Filed July 50, 1947 7 Sheets-Sheet 5 I n e v n FRANKLEACH and IVOR WILLIAM SUTCLIFFE Sept! 1951 F. LEACH ET AL 2,567,644

MACHINE FOR REVERSELY WINDING WEBB OF FABRICS Filed July 50, 1947 7Sheets-Sheet 6 Inventor FRANK LEACH and IVOR WILLIAM UTT/LIFFE MLJ 9%AGEN T Sept. 11, 1951 F. LEACH ET AL MACHINE FOR REVERSELY WINDING WEBS0F FABRICS Filed July 50, 1947 '7 Sheets-Sheet 7 FIG.|I

INVENTORS Aas/vr Patented Sept. 11, 1951 UNITED STATES PATENT OFFICE2,567,644 MACHINE FOR REVERSELY WINDING WEBS OF FABRICS Frank Leach andIvor William Sutcliffe, Whitworth, England, assignors to F. Smith & Co.(W'hitworth) Limited, Whitworth, England, a company of Great BritainApplication July 30, 1947, Serial No. 764,838

In Great Britain August 3, 1946 4 Claims.

This invention relates to machines for the treatment of long webs offabric or other material having two rollers onto and from which the webis successively wound and unwound and more particularly to improvementsin devices for automatically reversing the direction of travel of theweb of the kind in which each of the rollers is controlled by a separatemechanism operated from the other roller whereby the total number ofrevolutions of the rollers during the unwinding of the web from oneroller will be exactly the same as the number of revolutions during thepreceding winding of the web thereon, reversing being thus effected whenthe same length of web has been unwound from the roller as hadpreviously been wound thereon even though alteration should occur in thelength during its treatment when passing from one roller to the other.

According to the present invention each mechanism of the devicecomprises two discs arranged side by side and driven from the rolleroperated by the other mechanism, one disc being driven at a considerablygreater speed than the other, each disc being provided with a recessadapted to be entered by stud when the two recesses are in alignmentwith each other and with the stud, the entry of the stud into therecesses giving an angular movement to member operating a pair ofswitches, one of which stops the drive to one roller and starts thedrive to the other roller.

The invention is illustrated in and will be described with reference tothe accompanying drawings whichshow its application to the rollers of 'atensionless dye jig. In these drawings:

Fig. 1 is .a front elevation of a dye-jig showing the two reversingmechanisms applied thereto;

Fig. 2 is a side elevation thereof;

Fig. 3 is a vertical section through one of the reversing mechanisms;

Fig. 4 is a transverse section on line 4-4 Fig. '3;

Figs. 5, 6 and 7 are respectively a front elevation, side elevation andplan of an automatic stop motion for stopping the machine after the webhas been traversed through the machine a predetermined number of times;

Figs. '7 and 8 are face views of the two discs C and C respectively,

. Fig. 9 is an elevation of the stud 1.

Figs. 10 and 10a are front views in the direction of the arrow Fig. 3,of the control switches g and d showing the stud f in the notches inFig. 10 and out of the notches in Fig.'10a,'and

Fig. 11 is a circuit-diagram of control switches of the machine.

\ The'cl'lito be treated passes; through a tank the 19 in PQ IA WPP Fdal rna e from one roller 2' onto the second roller-2a and vice versa asit is drawn backwards and forwards through the tank I the rollers 2, 2abeing driven through differential gearing A mounted on a lay shaft 6 anddriving shafts 3 to enable each roller 2, 2a. to be rotated at differingspeeds according to the diameter of the cloth thereon. The rollers 2, 2aare mounted in end frames 4 of the machine. A motor 5 drives the layshaft 6 on which is also mounted bevel wheels 7 engaging bevel wheels 8one on each shaft E.

Each reversing mechanism consists of a shaft A on which a sleeve B isrotatably mounted, the shaft A having a disc C and the sleeve'B having adisc 0 secured thereon, the two being sideby side as shown in Fig. 3. Asecond shaft D having its axis parallel to the axes of the shaft A andsleeve B is driven through a chain e and sprocket wheels e and e (orother gear) from the roller shaft E, a Worm (1 drives through a doubleworm gearing a worm' wheel a secured to the shaft A and the pinion ddrives a gear wheel 11- secured on the sleeve B, the sleeve B being thusrotated at a much greater speed than the shaft A. The shaft A and sleeveB both extend to the outside of the casing C housing the gearing, andeach carries on its outer end a setting wheel A and B 'respectively'by'which it can be manually rotated. Each setting wheel carries apointer or other indicating means cooperating with a fixed pointer c onthe casing.

A notch or groove 0 c is formed in each disc C 0 see Figs. '7 and 8,these notches or grooves being so positioned that when the shaft A andsleeve B are rotated by their operating wheels A B to the zeropositionthe two notches or grooves 0 0 will coincide. The notch orgroove 0 in the disc C on the sleeve B, i. e. the fast running disc, isof V shape in cross section and the notch or groove 0 in the disc 0on'the' Shaft A, i. e. the slow, running disc, is rectangular in crosssection. v r e A stud f mounted on' a radial arm F affixed to a shortshaft F arranged above the shaft A and sleeve B and having itsaxisparallel thereto,

; rests on the peripheriesof the two discs C and C being kept in contacttherewith by the weight of the arm preferably assisted by a spring f thenotches or grooves. The stud has two. diff .t. running disc C in whichthe groove '0 isof ferent cross sections, the portion 1' over the shapebeing circular and the portion f over the slow running disc C in whichthe groove 0 is rectangular being square.

The shaft vF lis rotatably mounted in a bearing F and its angularmovement controls two switches 0 9/ one of which starts the drive of theroller 2 from the-shaft E. by which the shaft A and sleeve B are rotatedand the other starts the drive er the other rouer 2a. The reversingmechanism may be operated manually by switches W W and W. The switch Wis a control switch for starting and stopping the machine and theswitches W and W for controlling the direction of rotation of the motor5 to determine which roller 2 or 2a is driven. When manual operation isdesired three contacts P", P and P of a four poll switch Z are closedand contact P is open. The switch N is then short circuited.

For automatic control the four pole switch Z is operated to open thethree contacts P"; P and P and close the contact P This operation shortcircuits the switches W W and W and puts the switch N in circuit.

The operation will be described with reference to automatic control asshown in Fig. 11;

Qurrent is supplied from lines L L L to motor connections M M M througha contactor box= To start the motor 5 in one direction contacts P and Pof switch 9 are closed to energise a starting solenoid R in thecontactor box to close contacts R The motor will continue to run untilthe cloth is wound off the first roller 2 onto the second roller 2a whenthe slots in the discs 0 C will be in line. The stud 1 then drops intothe notches c and c and the contacts P and P" of switch 9 are opened andits contacts P and P are closed and the machine comes to rest andrestarts in the reverse direction by virtue of the closing of thesolenoid circuit R of the lower contacts R since the second pin fcontrolling the drive to the roller 2 will also have fallen into itsnotches on the second discs C C to close the contacts P and P of theswitch 9 The machine will continue to run and reverse as each reversingmechanism returns to the zero position until the switch N is operated tobreak the circuit.

At the start of the winding of the web onto the first roller of themachine preparator to treatment of the web the operatin wheels B and Aof the sleeve A and the shaft B of the mechanism driven from that rollerare set in the zero position so that the'stud f is located in thegrooves 0 0 of the discs C C When the roller is rotated to wind thecloth onto the roller the V shape of the groove 0 on the fast runningdisc C cooperating with the circular portion f of the stud J immediatelyraises the latter out of both grooves and the discs continue to rotateat their different speeds until the whole length of cloth is wound ontothe roller. The speed ratio between the shaft A and sleeve B is suchthat the disc C on the shaft will not make one revolution whilst the webis being wound onto the roller, so that during this operation thegrooves c and 0 will not be in alignment in a position which alsocoincides with the stud J.

After the web has been wound onto the roller its end is threaded throughthe machine and secured to the second roller thereof and the operatingwheels B and A of the sleeve B and shaft A driven from the second rollerare set to zero. The machine is then started and the rotation of thefast running disc C of the second reversing mechanism immediately raisesthe stud J of the latter out of the grooves c and c of the discs C C Themachine will now continue to run in the same direction, winding the webonto the second roller and 0E the first roller until the discs C and Cof the first mechanism have returned to the zero position with the twogrooves c c thereof in alignment and coinciding with the stud 4 7 whichthen falls into the grooves and operates the switches and g It will beevident that the discs C and C must rotate exactly the same number ofrevolutions when the web is being wound off the roller as they haverotated whilst it was being wound thereon so that the switches will notbe operated until all the web is wound off and the actuation of theswitches is entirely controlled by the length of the web.

On reversal of travel of the web the discs C and C of the secondmechanism have been rotated from their zero position by an amountcorresponding to the length of web wound onto the second roller which ifany stretch or shrinkage has occurred may be longer or shorter than theoriginal length of the web but when the second roller is being unwoundthe stud f of the second mechanism will not fall into the grooves c andc of the discs thereof until the latter have returned to their zeroposition i. e.when exactly the same length of web has been wound off theroller as had been wound onto it.

So that the machine may be automatically stopped after the web has beentraversed backwards and forwards through the machine for any desirednumber of times means are provided for this purpose as shown in Figs. 5,6, and 7.

The mechanism shown in Figs. 5, 6 and '7 comprises a shaft H on which ismounted a sleeve I-I carrying a wheel H having a finger or pointer hco-operating with a graduated scale on a disc h on the outside of thecasing C in which the mechanism is housed. The shaft H is arrangedbetween the two reversing mechanisms as shown in Fig. 2 and is at rightangles to the axis of the drive such as the shaft 6 of the differentialA driving the two rollers 2, 2a.

The'inner end of the shaft H carries a ratchet wheel Z having the samenumber of teeth as the number of graduations on the scale It over whichthe pointer it moves. A pawl Z is carried on an arm L pivotallyconnected by a rod L to disc L frictionally driven by spring controlledclutch plates m mounted on a shaft M driven from the differential Athrough the gear wheel a and pinion m and actuates the pawl Z of theratchet Wheel Z.

The disc L is held with an amount of pressure on the shaft Minsufficient to prevent rotation of the shaft inside the disc butsuflicient to move the disc to swing the arm L over at each reversal ofthe rotation of the shaft M. The ratchet wheel Z is thus rotated onetooth each time the drive to the roller is reversed.

The wheel H which carries the indicating pointer h is mounted on theshaft H so that it rotates therewith but can be turned by hand inrelation thereto.

The sleeve H carries a cam h adapted to engage a cam or projection n ona pivoted shaft N the movement of which operates a switch N controllingthe starting and stopping of the machine when operating automatically.

When the pointer h is in the zero position the cam h is in the positionto allow the switch N to be open to stop the machine. Thus to controlthe number of reversals of the machine, the wheel H is set to bring thepointer h to the desired number on the scale on the disc h andconsequentl when the ratchet wheel Z has been moved the same number ofteeth the pointer it will have returned to its zero position andthe'ma'chine will be stopped.

Manually operated switches are also provided for starting, stopping andreversing the machine.

We claim:

1. An automatic reversing device of the character described for amachine for treating long webs of fabric and having two rollers onto andfrom which the web is successively wound and unwound, said reversingdevice including two drive mechanisms, each drive mechanism driving oneof the two rollers and comprising two rotatable discs arranged side byside; two trains of gearing driving the said discs from the rolleroperated by the other drive mechanism, the ratios of the said trains ofgearing being such that one disc is rotated at a considerably greaterspeed than the other disc and each disc having a recess on itsperiphery, the discs being capable of being r0- tated to bring therecesses into alignment; a stud adapted to enter the two recesses whenthey are in alignment with each other and with the stud; an arm carryingthe stud on the end thereof; a rotatably mounted member to which the armis affixed; and a pair of switches, one of which is adapted to start thedrive mechanism of one roller and the other to start the drive mechanism of the other roller, the switches being operated when the studenters into the recesses in the discs through the consequent angularmovement of the arm imparting a rotary movement to the rotatably mountedmember.

2. An automatic reversing device of the char acter described for amachine for treating long webs of fabric and having two rollers onto andfrom which the web is successively wound and unwound, said reversingdevice including two drive mechanisms, each drive mechanism driving oneof the two rollers and comprising two rotatable discs arranged side byside; two trains of gearing driving said discs from the roller operatedby the other drive mechanism, the ratios of the said trains of gearingbeing such that one disc is rotated at a considerably greater speed thanthe other disc and each disc having a recess on its periphery, the discsbeing capable of being rotated to bring the recesses into alignment; astud adapted to enter the two recesses when they are in alignment witheach other and with the stud; an arm carrying the stud on the end there-'of, the recess in the faster running disc being of V-shape and theportion of the stud engaging the V-shaped recess being substantiallycircular so that upon commencing of rotation of the discs the stud willbe lifted out of the recesses; a rotatably mounted member to which thearm is affixed; and a pair of switches, one of which is adapted to startthe drive mechanism of one roller and the other to start the drivemechanism of the other roller, the switches being operated when the studenters into the recesses in the discs through the consequent angularmovement of the arm imparting a rotary movement to the rotatably mountedmember.

3. An automatic reversing device of the character described for amachine for treating long webs of fabric and having two rollers onto andfrom which the web is successively wound and unwound, said reversingdevice including two drive mechanisms, each drive mechanism comprisingtwo rotatable discs arranged side by side; a shaft on which one disc issecured; a sleeve surrounding said shaft and rotatable in relationthereto, on which sleeve the other disc is secured; two trains ofgearing driving the shaft and sleeve respectively from the rolleroperated by the other drive mechanism, the ratios of the said trains ofgearing being such that one disc is rotated at a considerably greaterspeed than the other disc and each disc having a recess on itsperiphery, both discs being capable of being rotated to bring therecesses into alignment; a stud adapted to enter the two recesses whenthey are in alignment with each other and with the stud; an arm carryingthe stud on the end thereof; a rotatably mounted member to which the armis affixed; a pair of switches, one of which is adapted to start thedrive mechanism of one roller and the other to start the drive mechanismof the other roller, the switches being operated when the stud entersinto the recesses in the discs through the consequent angular movementof the arm imparting a rotary movement to the rotatably mounted member;means secured to the shaft by which it can be rotated manually; andmeans secured to the sleeve by which it can also be rotated manually,whereby the shaft and sleeve can be rotated to bring them to zeroposition with the recesses in the discs and the stud in alignment beforethe commencement of operation of the machine.

4. In a machine for treating long webs or fabric, having two rollersonto and from which the web is successively wound and unwound, thecombination of a reversing device, and an automatic stop motion deviceefiective to stop the machine after the occurrence of a predeterminednumber of reversals of the travel of the web between the rollers, saidreversing device including two drive mechanisms, each drive mechanismcomprising two rotatable discs arranged side by side; a shaft on whichone disc is secured; a sleeve surrounding said shaft and rotatable inrelation thereto, on which sleeve the other disc is secured; two trainsof gearing driving the shaft and sleeve respectively from the rolleroperated by the other drive mechanism, the ratios of the said trains ofgearing being such that one disc is rotated at a considerably greaterspeed than the other disc and each disc having a recess on itsperiphery, both discs being capable of being rotated to bring therecesses into alignment; a stud adapted to enter the two recesses whenthey are in alignment with each other and with the stud; an arm carryingthe stud on the end thereof; a rotatably mounted member to which the armis affixed; a pair of switches, one of which is adapted to start thedrive mechanism of one roller and the other to start the drive mechanismof the other roller, the switches being operated when the stud entersinto the recesses in the discs through the consequent angular movementof the arm imparting a rotary movement to the rotatably mounted member;means secured to the shaft by which it can be rotated manually; andmeans secured to the sleeve by which it can also be rotated manually,whereby the shaft and sleeve can be rotated to bring them to zeroposition with the recesses in the discs and the stud in alignment beforethe commencement of operation of the machine.

FRANK LEACH. IVOR WILLIAM SU'ICLIFFE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,695,857 Proctor Dec. 18, 19281,958,676 Peterson May 15, 1934

